NathalyN
30.06.2019 •
Mathematics
What is the effect on the graph of the function f(x) = x when f(x) is replaced with f(−3x)? a) vertical reflection over x-axis and vertical stretch b) vertical reflection over x-axis and vertical compression c) horizontal reflection over y-axis and horizontal stretch d) horizontal reflection over y-axis and horizontal compression
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Ответ:
D
horizontal reflection over y-axis and horizontal compression
This is because plugging in 10 for x becomes
the - negative indicates the x has changed signs (flipped)
the 3 indicates that there will be a shrink
these shifts are learned by observing graph changes or memorization
Ответ: